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  <h1 class="topictitle1">Step 7: Creating a Replication SLA</h1>
  <div>
   <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p21023479277">This section describes how to configure the SLA of replication policies so that you can replicate local backup copies.</p>
   <div class="section" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_section15371826121012">
    <h4 class="sectiontitle">Prerequisites</h4>
    <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_p36192023182517">A backup SLA has been created. For details, see <a href="TPOPS_GaussDB_00018.html">Step 6: Creating a Backup SLA</a>.</p>
   </div>
   <div class="section" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_section16583194675411">
    <h4 class="sectiontitle">Procedure</h4>
    <ol id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_ol112221128161219">
     <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_li149381918143112"><span>Choose <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001839142377_uicontrol8111821122820"><b><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001839142377_text71111921162814"><strong>Protection</strong></span> &gt; Protection Policies &gt; SLAs</b></span>.</span></li>
     <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_li649983114125"><span>Locate the SLA for which you want to create a replication policy and choose <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol65851520181115"><b><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text135851920141111"><strong>More</strong></span> &gt; <span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text12585182011120"><strong>Modify</strong></span></b></span>.</span><p></p><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p1755616914533">The preset SLAs cannot be modified.</p> <p></p></li>
     <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_li158166713135"><span>Click the <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol913584621211"><b><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text1712915460122"><strong>Replication Policy</strong></span></b></span> icon.</span></li>
     <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_li3425152010144"><span>Configure replication policy information and click <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol58235718145"><b><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text7822157181411"><strong>OK</strong></span></b></span>.</span><p></p><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p16153162215210">Click <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol1828419903712"><b><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text0284094374"><strong>Add</strong></span></b></span> on the right of the page to create a maximum of four replication policies.</p> <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p44581620125214"><a href="#TPOPS_GaussDB_00032__en-us_topic_0000001839143213_table13459122015523">Table 1</a> describes the related parameters.</p>
      <div class="tablenoborder">
       <a name="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_table13459122015523"></a><a name="en-us_topic_0000001839143213_table13459122015523"></a>
       <table cellpadding="4" cellspacing="0" summary="" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_table13459122015523" frame="border" border="1" rules="all">
        <caption>
         <b>Table 1 </b>Replication policy parameters
        </caption>
        <colgroup>
         <col style="width:20.27%">
         <col style="width:79.73%">
        </colgroup>
        <thead align="left">
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row104584201527">
          <th align="left" class="cellrowborder" valign="top" width="20.27%" id="mcps1.3.3.2.4.2.3.2.3.1.1"><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p845842019525">Parameter</p></th>
          <th align="left" class="cellrowborder" valign="top" width="79.73%" id="mcps1.3.3.2.4.2.3.2.3.1.2"><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p184581020205218">Description</p></th>
         </tr>
        </thead>
        <tbody>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row20458142019527">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p245832015525"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text8458192015211"><strong>Name</strong></span></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p1045810202521">Replication policy name, which can be customized.</p></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row1417696194810">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p121772069486"><strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b113124229313">Replication Mode</strong></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p114821104810">
            Supported replication mode.
            <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul4288185019278">
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li1428814503274"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ph57815156317"><strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b5534193284517">Cross-domain</strong>: Replication is performed between clusters.</span></li>
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li52886509279"><strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b14259036194516">Intra-domain</strong>: Replication is performed among multiple nodes in the same cluster.</li>
            </ul>
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note147669135394">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p2766151373919">You can select <strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b12190147155315">Intra-domain</strong> only when there are multiple nodes in a cluster in the cluster HA scenario.</p>
             </div>
            </div>
           </div></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row17459132012528">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p1445892013523"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text10427850114314"><strong>Replication Target Cluster</strong></span></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p5458172025214">Target cluster to which data is replicated.</p> <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p17459182012526">Select the target cluster, or click <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol64582020185212"><b><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text44583204523"><strong>Add</strong></span></b></span> to add a new cluster.</p>
           <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note1850777104915">
            <span class="notetitle"> NOTE: </span>
            <div class="notebody">
             <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p2050714764917">This parameter is available only when <strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b163091411204613">Replication Mode</strong> is set to <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol126221458169"><b>Cross-domain</b></span>.</p>
            </div>
           </div></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row5452202122116">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p104521222115"><strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b1227715255412">Replication Target User</strong></p>
           <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note1631923514210">
            <span class="notetitle"> NOTE: </span>
            <div class="notebody">
             <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p8320153562113">This parameter is available only in 1.6.0 and later versions.</p>
            </div>
           </div></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p16452223212">Select the system administrator or data protection administrator of the target end for replication.</p></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row1447722162217">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p154771821132213"><strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b131613013413">Password</strong></p>
           <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note5670537172219">
            <span class="notetitle"> NOTE: </span>
            <div class="notebody">
             <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001839143213_p8320153562113">This parameter is available only in 1.6.0 and later versions.</p>
            </div>
           </div></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p047882152213">Enter the password of the system administrator or data protection administrator of the target end for replication. After entering the password, click <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol171601242183913"><b>Authenticate</b></span> to verify the password.</p></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row1160064311360">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p1760014313617">
            <strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b484825212416">Local Storage Type</strong>
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note634015517369">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001839143213_p8320153562113_1">This parameter is available only in 1.6.0 and later versions.</p>
             </div>
            </div>
           </div></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p16600343183619">Select the local storage type.</p></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row1097972085812">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p8979220165815"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text1965310576105"><strong>Specify Target Location</strong></span></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p697992085820">
            The replication target location can be a backup storage unit or a backup storage unit group. If a backup storage unit group is selected, the system selects a backup storage unit from the backup storage unit group as the replication target location when a backup copy is replicated for the first time. In subsequent replication, the backup storage unit used for the first replication is preferentially selected.
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note119618230211">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul19974205194214">
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li117129544426">For version 1.5.0, this parameter is available only when <strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b34101252204619">Replication Mode</strong> is set to <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol341015214615"><b>Intra-domain</b></span>.</li>
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li199748517429">A backup storage unit that has been specified as the target location for a backup policy cannot be used as the target location for a replication policy.</li>
              </ul>
             </div>
            </div>
           </div></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row945914209522">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p20459520195218"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text4459112015215"><strong>Interval</strong></span></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p11459192014527">
            Interval at which replication is performed.
            <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul14459102015215">
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li14459182018523">Perform replication immediately after a backup is complete.</li>
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li745932075219">Replication is performed every <em id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_i43819513148">xx</em> minutes, hours, days, or weeks.</li>
            </ul>
           </div></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row1560645125616">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p947373725610"><strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b16317238173010">Replication and Retention Rules</strong></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p2954144931916">Select the backup copy to be replicated and set the retention period of replication copies.</p>
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p74571017201913">
            Once the retention period expires, the system automatically deletes the expired copies. The retention period must be longer than the replication interval.
            <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001091370109_ul6461175912421">
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li14284119318"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text542916113319"><strong>Replicate all copies</strong></span>: Specify the time when the copy starts to be replicated and set the copy retention period.</li>
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li169914211296"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text78253174580"><strong>Replicate copies on the specified date</strong></span>: Specify the date and set the copy retention period. Only full and forever incremental (synthetic full) backup copies on a specified date can be replicated. You can select multiple options at the same time:
              <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul15411165794010">
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li241110576407">Select the full backup copies generated in month <em id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_i39921914123316">x</em> of each year for replication. The replication copies are retained for <em id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_i15992114113313">x</em> years (the retention period can be 1 to 70 years).</li>
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li156079239417">Select the first or last full backup copy of each month for replication. The replication copies are retained for <em id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_i61481332483">x</em> months (the retention period can be 1 to 840 months).</li>
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li7824743184118">Select the full backup copies generated on a specified day of each week for replication. The replication copies are retained for <em id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_i19641849298">x</em> weeks (the retention period can be 1 to 3650 weeks).</li>
              </ul>
              <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note13295163217817">
               <span class="notetitle"> NOTE: </span>
               <div class="notebody">
                <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul16634174815310">
                 <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li9869521530">For applications that do not support forever incremental (synthetic full) backup, only full copies on a specified date can be replicated.</li>
                 <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li1563410481331">If multiple options are selected, copies on any date specified by these options are replicated, and the obtained replication copies are retained for the longest period specified in these options.</li>
                 <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li658617537551">For 1.6.0 and later versions, if you choose to replicate the last full backup copy in a month, the job for replicating the to-be-replicated full backup copy in the current month will be executed in the next month.</li>
                </ul>
               </div>
              </div></li>
            </ul>
           </div></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row204591820145215">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p34591520185211"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text1945911201524"><strong>First Run At</strong></span></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p19459820145211">Start time of the first replication job.</p>
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p14592203523">
            If <span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text10459152095213"><strong>First Run At</strong></span> is later than the current time, data replication starts based on <span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text945932065215"><strong>First Run At</strong></span>. If <span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text3459142095218"><strong>First Run At</strong></span> is earlier than the current time, data is replicated when the next replication period arrives.
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note3459142085219">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001607531760_ul28273511414">
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001607531760_li58279510418">Ensure that the device time of the agent host, local cluster, and target cluster is consistent.</li>
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001607531760_li1362912714119">If Air Gap is planned, ensure that the first execution time is within the Air Gap replication time window of the target cluster and that the start time of each replication job is within the Air Gap replication time window. If a replication job does not end within the Air Gap replication time window and <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001607531760_uicontrol1574053616579"><b>Forcibly Suspend Replication</b></span> is enabled for the Air Gap policy, the replication job will be forcibly terminated. To complete the replication job, disable <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001607531760_uicontrol177346125213"><b>Forcibly Suspend Replication</b></span> for the Air Gap policy of the target cluster.</li>
              </ul>
             </div>
            </div>
           </div></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row16459820195220">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p184591205527"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text13459152015219"><strong>Rate Limiting Policies</strong></span></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p15459152015210">Average maximum amount of data that can be transmitted per second in a replication job.</p> <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p194591520115218">Select the created rate limiting policy. For details about how to create a rate limiting policy, see <a href="TPOPS_GaussDB_00017.html#TPOPS_GaussDB_00017">Step 5: Creating a Rate Limiting Policy</a>.</p></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row12459820115213">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p1645922075210">
            <strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b477664753718">Link Deduplication</strong>
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note43214486811">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p9322048780">In 1.5.0, the parameter name is <span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text16858755171112"><strong>Data Deduplication</strong></span>.</p>
             </div>
            </div>
           </div></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p6459720115211">
            After this function is enabled, the system deduplicates data copies during remote replication to improve replication efficiency. You are advised to enable data deduplication.
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note19674741123810">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul1096989193510">
               <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li18970109163510">Ensure that target deduplication has been enabled for the backup policy. Otherwise, data deduplication does not take effect.</li>
              </ul>
             </div>
            </div>
           </div></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row4459102095213">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p1545992016524">
            <strong id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_b98264501378">Link Compression</strong>
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note98175196112">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p188181119191119">In 1.5.0, the parameter name is <span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text7585914124"><strong>Data Compression</strong></span>.</p>
             </div>
            </div>
           </div></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p4459152065211">After this function is enabled, the system compresses data copies during remote replication to improve replication efficiency. You are advised to enable data compression.</p></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row195653402551">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 ">
           <div class="p" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p756564045514">
            <span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text19670113775616"><strong>WORM Setting</strong></span>
            <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note9935149115617">
             <span class="notetitle"> NOTE: </span>
             <div class="notebody">
              <p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001792503806_p18759163818421">This parameter is available only in 1.5.0.</p>
             </div>
            </div>
           </div></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p956534010557">After this function is enabled, generated copies are WORM copies. WORM copies cannot be deleted, and their retention periods cannot be shortened.</p></td>
         </tr>
         <tr id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_row245914204526">
          <td class="cellrowborder" valign="top" width="20.27%" headers="mcps1.3.3.2.4.2.3.2.3.1.1 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p113408251083"><span id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_text5187195813484"><strong>Job Failure Alarm</strong></span></p></td>
          <td class="cellrowborder" valign="top" width="79.73%" headers="mcps1.3.3.2.4.2.3.2.3.1.2 "><p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p7601371993">After this function is enabled, an alarm is automatically sent if a job fails and is automatically cleared after successful execution.</p></td>
         </tr>
        </tbody>
       </table>
      </div> <p></p></li>
     <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_li14772135418213"><span>Click <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_en-us_topic_0000001092505481_uicontrol13919162932"><b>OK</b></span> and confirm as prompted.</span></li>
     <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li585617920201"><span>Associate a resource with a replication SLA policy to periodically replicate copies.</span><p></p>
      <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul7677171614357">
       <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li1167721615358">If an SLA policy has been associated with resources, the system protects the resources based on the SLA policy.</li>
       <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li1778718152365">If the SLA policy is not associated with any resource, associate a resource with the SLA policy for protection. For details, see <a href="TPOPS_GaussDB_00019.html">Step 7: Performing Backup</a>.
        <div class="note" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_note1465611242259">
         <img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span>
         <div class="notebody">
          <ul id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ul12729526113420">
           <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li11502190184711">When executing a replication job, ensure that the used capacity of storage pools on the local and target clusters does not exceed <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol134618370529"><b>Data Backup Capacity</b></span> specified in the license. Otherwise, the replication job fails. Perform the following steps to check whether the capacity is sufficient:
            <ol type="a" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_ol14312567529">
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li118994632112">Log in to DeviceManager of the backup storage devices in the local and target clusters. For details, see <a href="en-us_topic_0000001913343113.html">Logging In to DeviceManager</a>.</li>
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li0708930155417">Choose <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol14133214551"><b>System &gt; Storage Pools</b></span> and view the used storage pool capacity.</li>
             <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li13771152165511">Choose <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol1379134385710"><b>Setting &gt; License Management</b></span> and check <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol1740442155618"><b>Data Backup Capacity</b></span>.<p id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_p936183955611">The used storage pool capacity cannot exceed <span class="uicontrol" id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_uicontrol18711937192110"><b>Data Backup Capacity</b></span>.</p></li>
            </ol></li>
           <li id="TPOPS_GaussDB_00032__en-us_topic_0000001839143213_li137291526173411">You cannot view the replication copies generated by replication jobs in the local cluster, but can only view them or use them for restoration in the target cluster.</li>
          </ul>
         </div>
        </div></li>
      </ul> <p></p></li>
    </ol>
   </div>
  </div>
  <div>
   <div class="familylinks">
    <div class="parentlink">
     <strong>Parent topic:</strong> <a href="TPOPS_GaussDB_00024.html">Replicating GaussDB Copies</a>
    </div>
   </div>
  </div>
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